Kiani Salma, Staples Richard J, Packard Alan B
Division of Nuclear Medicine, Children's Hospital/Harvard Medical School, Boston, MA 02115, USA.
Acta Crystallogr C. 2002 Dec;58(Pt 12):m593-5. doi: 10.1107/s0108270102019911. Epub 2002 Nov 20.
The dimeric title copper(II) complex, diaqua-1kappaO,2kappaO-bis[3,9-dimethyl-6-(2-pyridylmethyl)-4,8-diazaundeca-3,8-diene-2,10-dione dioximato(1-)]-1k(4)N(2),N(4),N(8),N(10);1:2kappa(5)O(2):N(2),N(4),N(8),N(10)-dicopper(II) diperchlorate, Cu(2)(C(17)H(24)N(5)O(2))(2)(2), crystallizes with one Cu atom in a square-pyramidal environment and the other Cu atom displaying a distorted octahedral coordination. In each case, the four N atoms in the core of the ligand (two imine and two oxime N atoms) form the base of the pyramid, with a water molecule at an apex. The two parts of the dimer are linked by an interaction [2.869 (2) A] between one of the Cu atoms and one of the oxime O atoms coordinated to the second Cu atom, and also by a hydrogen bond between the apical water molecule on the second Cu atom and the pyridyl N atom from the coordination sphere of the first Cu atom. The pyridyl N atoms of the lariat arms are not coordinated to either of the Cu atoms. Thus, this potentially pentadentate ligand is only tetradentate when coordinated to Cu(II).
二聚体标题铜（II）配合物，二水合-1κO，2κO-双[3,9-二甲基-6-（2-吡啶甲基）-4,8-二氮杂十一碳-3,8-二烯-2,10-二酮二肟合（1-）]-1κ（4）N（2），N（4），N（8），N（10）；1:2κ（5）O（2）：N（2），N（4），N（8），N（10）-二铜（II）高氯酸二酯，[Cu₂（C₁₇H₂₄N₅O₂）₂]（ClO₄）₂，结晶时一个铜原子处于四方锥环境，另一个铜原子呈现扭曲的八面体配位。在每种情况下，配体核心中的四个氮原子（两个亚胺氮原子和两个肟氮原子）构成锥体的底部，一个水分子位于顶点。二聚体的两部分通过一个铜原子与配位至第二个铜原子的一个肟氧原子之间的相互作用[2.869（2）Å]以及第二个铜原子上的顶端水分子与第一个铜原子配位球中的吡啶氮原子之间的氢键相连。套索臂的吡啶氮原子不与任何一个铜原子配位。因此，这种潜在的五齿配体与铜（II）配位时仅为四齿配体。
